Fabrication of Coffee‐Ring Nanostructured Membranes for Organic Solvent Nanofiltration

Author:

Jin Cheng‐Gang1,Zhang Wen‐Hai1,Tian Na1,Wu Bin1,Yin Ming‐Jie1,An Quan‐Fu1ORCID

Affiliation:

1. Beijing Key Laboratory for Green Catalysis and Separation Department of Chemical Engineering College of Materials Science and Engineering Beijing University of Technology Beijing 100124 China

Abstract

AbstractOrganic solvent nanofiltration (OSN) plays important roles in pharmaceutical ingredients purification and solvent recovery. However, the low organic solvent permeance under cross‐flow operation of OSN membrane hampers their industrial applications. Herein, we report the construction of coffee‐ring structured membrane featuring high OSN permeance. A water‐insoluble crystal monomer that dissolved in EtOH/H2O mixed solvent was designed to react with trimesoyl chloride via interfacial polymerization. Owing to the diffusion of EtOH to n‐hexane, coffee‐ring nanostructure on the support membrane appeared, which served as the template for construction of coffee‐ring structured membrane. The optimal nanostructured membrane demonstrated 2.6‐fold enhancement in the effective surface area with reduced membrane thickness. Resultantly, the membrane afforded a 2.7‐fold enhancement in organic solvent permeance, e.g., ~13 LMH/bar for MeOH, without sacrificing the rejection ability. Moreover, due to the rigid monomer structure, the fabricated membrane shows distinctive running stability in active pharmaceutical ingredients purification and the ability for concentration of medicines.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Reference43 articles.

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2. Current approaches for the purification of antibody–drug conjugates

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4. Molecular Separation with Organic Solvent Nanofiltration: A Critical Review

5. Precedence Research “Global Industry Analysis Size Share Growth Trends Regional Outlook and Forecast 2023–2032” can be found underhttps://www.precedenceresearch.com/solvents-market(accessed 15 October 2023).

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